Singekrawee Wattanakul defeated Kento Takeuchi 7-5 6-3 in the Turkey F5 round of 32 on hard. The upset overturned the form book — Kento Takeuchi came in leading the head-to-head 4–0. Singekrawee Wattanakul claimed a first win over Kento Takeuchi in five meetings, narrowing the head-to-head to 4–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2015-04-20 | Thailand F1 | SF | hard | Kento Takeuchi | 7-6(5) 6-3 |
| 2014-09-22 | Kuala Lumpur | Q2 | hard | Kento Takeuchi | 6-2 6-3 |
| 2014-07-21 | Hong Kong F3 | R32 | hard | Kento Takeuchi | 7-5 7-5 |
| 2014-02-17 | Thailand F2 | R32 | hard | Kento Takeuchi | 7-6(5) 6-7(1) 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.